On Dr. McCoy's orders, Mr. Scott joins him and Captain Kirk on shore-leave on Argelius, where the natives, especially the women, are extremely accommodating. Suddenly they find Scotty shivering with a knife in his hand used to stab repeatedly Kara, a girl whose corps lies at his feet. The local prefect and Mr. Hengist, a foreigner employed as administrator, lead the murder investigation. The Enterprise beams down a psycho-tricorder to probe Scotty's mind, but the murder knife to stir the pref ...[Read Story ]